-(单选题) 1: 第三次作业问题A4A: Her vacation lasted two weeks.B: Her vacation lasted three weeks.C: Her vacation lasted four weeks.D: Her vacation lasted five weeks.正确答案: (单选题) 2: 第三次作业问题B4A: Please take your hand off the box.B: Please give me your hand.C: Would you help me to carry the box?D: Give me the box, will you?